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Investments | 6 Months Ended
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Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract] |
Investments | 3. Investments Expected maturities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. We deposit bonds with insurance regulatory authorities to meet statutory requirements. The adjusted cost of bonds on deposit with insurance regulatory authorities was $16.4 million at September 30, 2013. Available-for-Sale Investments Available-for-sale investments at September 30, 2013 were as follows:
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses More than 12 Months |  | Gross Unrealized Losses Less than 12 Months |  | Estimated Market Value
|  | (Unaudited)
|  | (In thousands)
U.S. treasury securities and government obligations | $ | 28,048 | $ | 1,932 | $ | (3 | )$ | (293 | )$ | 29,684
U.S. government agency mortgage-backed securities |  | 44,735 |  | 2,772 |  | (4 | ) | (1,009 | ) | 46,494
Obligations of states and political subdivisions |  | 162,678 |  | 9,304 |  | (132 | ) | (1,916 | ) | 169,934
Corporate securities |  | 800,834 |  | 28,872 |  | (1,336 | ) | (22,474 | ) | 805,896
Mortgage-backed securities |  | 5,613 |  | 177 |  | (35 | ) | - |  | 5,755
Redeemable preferred stocks |  | 18,440 |  | 385 |  | (64 | ) | (312 | ) | 18,449
Common stocks |  | 37,356 |  | 2,171 |  | (1,291 | ) | (108 | ) | 38,128
| $ | 1,097,704 | $ | 45,613 | $ | (2,865 | )$ | (26,112 | )$ | 1,114,340
The table above includes gross unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. We sold available-for-sale securities with a fair value of $103.3 million during the first six months of fiscal 2014. The gross realized gains on these sales totaled $3.2 million. The gross realized losses on these sales totaled $0.9 million. The unrealized losses of more than twelve months in the available-for-sale table are considered temporary declines. We track each investment with an unrealized loss and evaluate them on an individual basis for other-than-temporary impairments including obtaining corroborating opinions from third party sources, performing trend analysis and reviewing management's future plans. Certain of these investments may have declines determined by management to be other-than-temporary and we recognized these write-downs through earnings. There were no write downs in the second quarter or for the first six months of fiscal 2014 and 2013. The investment portfolio primarily consists of corporate securities and U.S. government securities. We believe we monitor our investments as appropriate. Our methodology of assessing other-than-temporary impairments is based on security-specific analysis as of the balance sheet date and considers various factors including the length of time to maturity, the extent to which the fair value has been less than the cost, the financial condition and the near-term prospects of the issuer, and whether the debtor is current on its contractually obligated interest and principal payments. Nothing has come to management's attention that would lead to the belief that each issuer would not have the ability to meet the remaining contractual obligations of the security, including payment at maturity. We have the ability and intent not to sell our fixed maturity and common stock investments for a period of time sufficient to allow us to recover our costs. The portion of other-than-temporary impairment related to a credit loss is recognized in earnings. The significant inputs utilized in the evaluation of mortgage backed securities credit losses include ratings, delinquency rates, and prepayment activity. The significant inputs utilized in the evaluation of asset backed securities credit losses include the time frame for principal recovery and the subordination and value of the underlying collateral. Credit losses recognized in earnings for which a portion of an other-than-temporary impairment was recognized in other comprehensive income were as follows:
|  | Credit Loss
|  | (Unaudited)
|  | (In thousands)
Balance at March 31, 2013 | $ | 552
Additions: |  |
Other-than-temporary impairment not previously recognized |  | -
Balance at September 30, 2013 | $ | 552
The adjusted cost and estimated market value of available-for-sale investments at September 30, 2013, by contractual maturity, were as follows:
|  | Amortized Cost |  | Estimated Market Value
|  | (Unaudited)
|  | (In thousands)
Due in one year or less | $ | 25,259 | $ | 25,520
Due after one year through five years |  | 186,894 |  | 195,909
Due after five years through ten years |  | 316,233 |  | 320,354
Due after ten years |  | 507,909 |  | 510,225
|  | 1,036,295 |  | 1,052,008
Mortgage backed securities |  | 5,613 |  | 5,755
Redeemable preferred stocks |  | 18,440 |  | 18,449
Common stocks |  | 37,356 |  | 38,128
| $ | 1,097,704 | $ | 1,114,340

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Debt Security -URI http://asc.fasb.org/extlink&oid=6509901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -Glossary Equity Security -URI http://asc.fasb.org/extlink&oid=6511694 + Details
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